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All Journal JIKSI (Jurnal Ilmu Komputer dan Sistem Informasi) Computatio : Journal of Computer Science and Information Systems INTECOMS: Journal of Information Technology and Computer Science MIND (Multimedia Artificial Intelligent Networking Database) Journal Simtek : Jurnal Sistem Informasi dan Teknik Komputer Jutisi: Jurnal Ilmiah Teknik Informatika dan Sistem Informasi Progresif: Jurnal Ilmiah Komputer Jurnal Bakti Masyarakat Indonesia Infotech: Journal of Technology Information Jurnal Mandala Pengabdian Masyarakat International Journal Software Engineering and Computer Science (IJSECS) Joutica : Journal of Informatic Unisla Al-Khidmah Jurnal Pengabdian Masyarakat Jurnal Sains dan Teknologi Prosiding Seri Seminar Nasional Jurnal Komputer Teknologi Informasi Sistem Komputer (JUKTISI) Internet of Things and Artificial Intelligence Journal Jurnal Serina Abdimas
Novario Jaya Perdana
Universitas Tarumanagara
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Journal : Infotech: Journal of Technology Information

 1 
KERATONGUIDE – IMPLEMENTASI HARVESINE FORMULA UNTUK MENDETEKSI KEDATANGAN PENGGUNA KETIKA MEMASUKI GEOFENCE Lim, Yulia; Wasino, Wasino; Perdana, Novario Jaya
Infotech: Journal of Technology Information Vol 9, No 2 (2023): NOVEMBER
Publisher : ISTEK WIDURI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37365/jti.v9i2.196

Abstract

Keratonguide application is an android-based tour guide application. This application provides features such as tracking travelers' movements in real-time, finding the nearest destination based on tourist locations, displaying information about culinary, hotels, and events based on city choices, and applying the geofence method to display markets based on destination choices. The keratonguide mobile application uses the flutter framework with the programming language using dart, integrates the Google Maps API to draw a polyline from the tourist position to the destination based on the tourist's choice and also implements the Harvesine Formula to find the nearest destination. The final result of this research is that users can choose the destination they want to visit and get information about the market when entering the radius based on the selected destination using the geofencing method.
ANALISIS HUBUNGAN MATA KULIAH KOMPUTASI DASAR DENGAN IPK MAHASISWA TEKNIK INFORMATIKA MENGGUNAKAN SUPPORT VECTOR REGRESSION Perdana, Novario Jaya; Ferdinand, Kelvin; Gozali, Carisha Puspa; Herwindiati, Dyah Erny
Infotech: Journal of Technology Information Vol 11, No 1 (2025): JUNI
Publisher : ISTEK WIDURI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37365/jti.v11i1.383

Abstract

Student academic performance serves as a key indicator in higher education assessment. For students in Informatics Engineering, foundational computing skills are critical to their academic progression, and these are primarily acquired through first-semester courses. This study proposes a predictive model for Cumulative Grade Point Average (GPA) using the Support Vector Regression (SVR) method with a Radial Basis Function (RBF) kernel. The courses "Introduction to Algorithms," "Computation I," "Computation II," and "Data Structures" were selected as independent variables, as they provide essential computing foundations for subsequent coursework. The dataset comprised 270 records, each containing grades from the aforementioned courses and the corresponding GPA achieved by students in their fourth semester. To ensure data quality, outlier detection was performed using the Z-score method, resulting in a refined dataset of 200 entries. This dataset was then split into 75% for training and 25% for testing. A grid search optimization identified the best hyperparameter combination: C = 100, γ = 0.05, and ε = 0.05. Model evaluation yielded promising results, with a Mean Absolute Error (MAE) of 0.0742, a Mean Absolute Percentage Error (MAPE) of 2.19%, a Mean Squared Error (MSE) of 0.012, and an R² score of 0.8695—indicating strong predictive accuracy. Furthermore, the F-test produced a value of 74.9440, which exceeds the critical F-value of 2.5787, confirming the statistical significance of the independent variables in predicting GPA. This model has the potential to support academic monitoring and enhancement efforts by delivering actionable predictions and insights for the Informatics Engineering program.
Co-Authors Agus Budi Dharmawan Agus Budi Dharmawan Alvin Chandra Andre Ertanto Andre, Andre Andy Wijaya Nusantara Angeline, Mariani Anindya, Florentina Pramita Anthony Arisandi, Desi bagus Mulyawan Bagus Mulyawan Bernike Burnama Bryan Filemon Budiyantara, Agus Bunardi Budiman Burnama, Bernike Calvinus, Yohanes Caroline Wili Harto Chairisni Lubis Chairisni Lubis Chairisni Lubis Charles Yuliansen Chavia Rossyerin Prabowo Sutjiadi Daffa Hilmi Aji Daniel Ary Nugroho Danu Yuliarto Dany Setiawan Darwin Raharja Dedi Trisnawarman Derren Chrissanto Desi Arisandi Desi Arisandi Devin Abipraya Dhananjaya, Asoka Dyah Erny Herwindiati Dyah Erny Herwindiati Edgar Lawrence Edward Darmaja Edwin Suryaputra Endah Setyaningsih Ery Dewayani Faithtria, Monica Glory Felicia, Clara Ferdinand, Kelvin Fransisca Iriani Roesmala Dewi Frederick, Thomas Gian Ramanda Gilang Samudro Giselle Naomi Sutanto Gozali, Carisha Puspa Gumay, Fhilia Anasty Han, Hansen Hanven Pradana Herwindiati, Dyah Erni Hetty Karunia Tunjungsari Hidayat, Farasya Syifa Hizkia Natanael Ivan Ivan Sutedjo Jane Syahwalina Kaprica Sandra Jap Tji Beng Jason Jeanny Pragantha Jeffri Alimin Jonathan Jovian, Ernestito Kacen Kalengkongan, Aurelia Naftali Kelvin Fernando Pinem Kelvin Wijaya Kevin kevin Kevin Marcello Jonathan Lim, Yulia Lioviani Gavrilla Louis, Josh Mariani Angeline Mei Ie Milson, Audie Muhammad Adi Nugraha Mulyawan, Bagus Natalicia Margatan Nathan, Michael Nathaniel Andrew Nicko Kurniawan Nizham Kamil Hia Owen Maytrio Phratama Pertiwi , Saula Rahmadianti K. Phang, Jastien Phratama, Owen Maytrio Prisiani, Yuri Putri, Tiara Maharani Azkia Ramanda, Gian Ribka Suwardy Richard, Richard Riyanto, Radika Yudha Salsabila, Unik Hanifah Sandra, Jane Syahwalina Kaprica Santoso, Fabio Santoso, Salim Sarah Azka Nazwah Saula Rahmadianti Krisma Pertiwi Sebastian, Dennis Sherena Yemima Purba Sri Tiatri Steven Cang Steven Dharmawan Sudono Widjaja Sukardi, Aldy Supirman Supirman Sutanto, Giselle Naomi Suwarjono, Gilang Samudro TAKESHI, CECILIANA Tamara Violeta Teny Handhayani Tony Tony Trisnawarman, Dedi Valencia Valencia, Valencia Vanesa Nellie Victor Femona Laoli Vincent Marcellino Viny Christanti M Viny Christanti Marwadi Wasino Wasino Wasino Wasino, Wasino William Antonius William Wijaksana Willyanto Wijaya Windah Maria Sonia Nadiah Hutagalung Yagyu Munenori M.E. Yongky Saputra Zyad Rusdi Zyad Rusdi